Routing Congestion
Congestion is defined as the positive excess of demand over supply, and overflow sums that excess over grid edges. Routing congestion is modeled as a sparse demand-supply field over routing grid edges rather than only as a netlist node lab…
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Congestion is defined as the positive excess of demand over supply, and overflow sums that excess over grid edges. Routing congestion is modeled as a sparse demand-supply field over routing grid edges rather than only as a netlist node label. Congestion models need to encode both hypergraph connectivity and spatial resource fields. RUDY estimates routing demand from nets crossing bounding boxes, with variants that account for practical routing details.